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Central venous dialysis catheter dysfunction

M Leblanc1, J Y Bosc, E P Paganini

  • 1Department of Nephrology, Lapeyronie Hospital, Montpellier, France.

Advances in Renal Replacement Therapy
|November 14, 1997
PubMed
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Central venous catheter dysfunction impacts renal replacement therapy efficiency and patient health. Early detection and maintenance are crucial for preventing and resolving issues like fibrin deposition and thrombus formation, ensuring optimal dialysis.

Area of Science:

  • Nephrology and Vascular Access

Background:

  • Central venous catheter (CVC) dysfunction is a significant impediment to effective renal replacement therapy (RRT).
  • Dysfunction can arise from mechanical issues, fibrin deposition, or thrombus formation, affecting catheter performance and patient outcomes.

Purpose of the Study:

  • To review the causes, clinical manifestations, and management of central venous dialysis catheter dysfunction.
  • To discuss performance parameters and factors influencing catheter longevity and efficiency.

Main Methods:

  • Review of literature on CVC dysfunction in hemodialysis.
  • Analysis of clinical presentation, diagnostic methods, and treatment strategies.
  • Evaluation of catheter performance metrics including blood flow rate, pressure resistance, and recirculation.

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Main Results:

  • Catheter dysfunction presents as failure to aspirate, inadequate flow, high pressures, or subtle recirculation.
  • Fibrin deposition and thrombus formation are common causes of early and delayed dysfunction.
  • Recirculation rates should ideally be below 10-15%, with jugular and subclavian catheters generally performing better than femoral.
  • The TwinCath catheter shows promising performance characteristics.

Conclusions:

  • Effective catheter maintenance and regular monitoring of dialysis adequacy are essential for preventing and detecting dysfunction.
  • Understanding catheter limitations and performance parameters is key to optimizing RRT.
  • Timely intervention, including fibrinolytic therapy, can restore catheter patency.